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Elucidation of organ-specific metastasis formation-promoting microenvironment focusing on metastatic organ-directedness of pancreatic cancer

Research Project

Project/Area Number 19K09175
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 55020:Digestive surgery-related
Research InstitutionKyushu University

Principal Investigator

MIYASAKA Yoshihiro  九州大学, 医学研究院, 共同研究員 (40507795)

Co-Investigator(Kenkyū-buntansha) 寅田 信博  九州大学, 大学病院, 臨床検査技師 (00398075)
森山 大樹  九州大学, 大学病院, 准教授 (70586859)
大内田 研宙  九州大学, 大学病院, 講師 (20452708)
Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2021: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords膵癌 / desmoplasia / drug delivery system / ナノ粒子 / 免疫細胞 / DDS
Outline of Research at the Start

膵癌は組織学的にdesmoplasiaと呼ばれる過剰な間質増生が特徴である、膵癌間質は組織圧が高く乏血性でかつ細胞外基質が豊富なため薬剤送達効率が低く、治療抵抗性の一因となっている。しかし、薬剤送達効率の悪い膵癌間質においても免疫細胞は豊富に存在する。本研究ではこの膵癌間質に豊富に存在する免疫細胞を膵癌治療薬のキャリアとする新たなDrug delivery system (DDS)を開発することで薬剤送達効率を向上させ、安全かつ効率的な膵癌の治療法を開発する。

Outline of Final Research Achievements

Pancreatic cancer is characterized by abundant stroma. This prevents the delivery of therapeutic drugs to cancer cells by high tissue pressure and hypervascularity in the stroma, and the stroma acts as a physical barrier.
In this study, we developed a drug delivery system using nanoparticles that can specifically deliver drugs to the pancreatic cancer stroma. Furthermore, we succeeded in safely and reliably administering chloroquine, which has a regulatory effect on the stroma of pancreatic cancer, at a dose as low as one-fifth the usual dose in a mouse model. This system enables stromal control and, when combined with gemcitabine, has been shown to reduce the size of tumors.

Academic Significance and Societal Importance of the Research Achievements

膵癌は発見時に進行しており、化学療法が必要となることが多いが、現在その効果は限定的である。その原因として薬剤送達の障壁となる間質増生が顕著であり、単に血流を介したdrug delivery systemでは十分な効果は得られていない。
本研究では、ナノ粒子によるdrug delivery systemを介してchloroquineを投与することで間質を制御しつつ、抗癌剤を投与することで効果を上昇させることに成功した。この手法を取ることで他の薬剤への応用も可能と考えられ、臨床的意義があるものと考える。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (5 results)

All 2021 2020 2019

All Journal Article (2 results) (of which Peer Reviewed: 2 results,  Open Access: 1 results) Presentation (3 results) (of which Int'l Joint Research: 1 results)

  • [Journal Article] Efficient pre-treatment for pancreatic cancer using chloroquine-loaded nanoparticles targeting pancreatic stellate cells2021

    • Author(s)
      Matsumoto Sokichi、Nakata Kohei、Sagara Akiko、Guan Weiyu、Ikenaga Naoki、Ohuchida Kenoki、Nakamura Masafumi
    • Journal Title

      Oncology Letters

      Volume: 22 Issue: 2 Pages: 633-633

    • DOI

      10.3892/ol.2021.12894

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Neutrophil extracellular traps promote liver micrometastasis in pancreatic ductal adenocarcinoma via the activation of cancer-associated fibroblasts2019

    • Author(s)
      Takesue S、Ohuchida K、Shinkawa T、Otsubo Y、Matsumoto S、Sagara A、Yonenaga A、Ando Y、Kibe S、Nakayama H、Iwamoto C、Shindo K、Moriyama T、Nakata K、Miyasaka Y、Ohtsuka T、Toma H、Tominaga Y、Mizumoto K、Hashizume M、Nakamura M
    • Journal Title

      International Journal of Oncology

      Volume: 56 Pages: 596-605

    • DOI

      10.3892/ijo.2019.4951

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 膵癌に対するナノ粒子DDSの有用性の検討2021

    • Author(s)
      松本奏吉、仲田興平、伊達聡美、関維雨、相良亜希子、池永直樹、大内田研宙、中村雅史
    • Organizer
      第57回九州外科学会
    • Related Report
      2020 Research-status Report
  • [Presentation] ナノ粒子DDSを用いた新規膵星細胞活性化抑制剤の開発2020

    • Author(s)
      松本奏吉、仲田興平、関維雨、相良亜希子、池永直樹、大内田研宙、大塚隆生、中村雅史
    • Organizer
      第75回日本消化器外科学会総会
    • Related Report
      2020 Research-status Report
  • [Presentation] Efficient Targeted Therapy for Pancreatic Cancer Using Nanosystem and Focusing on the Suppression of Pancreatic Stellate Cell Activation2020

    • Author(s)
      Matsumoto S, Nakata K, Ikenaga N, Date S, Guan W, Sagara A, Ohuchida K, Ohtsuka T, Nakamura M
    • Organizer
      14th World Congress of International Hepeto-Pancreato-Biliary Association
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research

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Published: 2019-04-18   Modified: 2023-01-30  

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